docs: def _get_atomsection(mol2_lst):
          """Returns atom section from mol2 provided as list of strings"""
          started = False
          for idx, s in enumerate(mol2_lst):
              if s.startswith('@<TRIPOS>ATOM'):
                  first_idx = idx + 1
                  started = True
              elif started and s.startswith('@<TRIPOS>'):
                  last_idx_plus1 = idx
                  break
          return mol2_lst[first_idx:last_idx_plus1]